Regarding the ongoing server issues you expected throughout the last days:
Those were and are actually caused by our web service provider rolling out first fixes for the infamous "Spectre" and "Meltdown" issues currently affecting almost all computer systems worldwide.
We will be scaling up our system in the next days to mitigate the issue as good as possible.
For those of you interested in the technical background, here's a good read. The part with
"Cloud providers like Amazon Web Services are working to apply patches to their systems as well, and are grappling with corresponding performance slowdowns; the fixes involve routing data for processing in less efficient ways"
is the one currently affecting us. Full "Wired" Article: